Bicycle-brake.



Patented may 20, M2.

A. MAIN.

BICYCLE BRAKE.

- (Application flled .nm. a. 1902.

(N0 il odel UNITED STATES PATENT OFFICE.

ALBERT MAIN, POWELLTON, CALIFORNIA.

BICYCLE-BRAKE. j

aSIPEGIFICATION formingpart of Letters Patent No. 700,359, dated May 20, 1902.

.- Applicationfiled January 6, 1902. Serial No. 88,533. (No model.) I

To all whom it may concern:

Be it known that I, ALBERT MAIN, a citizen of the United States, residing at Powellton, county of Butte, State of California, have'invented an Improvement in Bicycle-Brakes,

and I hereby declare the following to be a full,

clear, and exact description of the same. 1

My invention relates to improvements in brakes for bicycles and means for operating the same. 7

It consists of a rim or flange, means for fixing it-within the rim or folly of the wheel and at one side of the spokes, a brake-shoe, and

mechanism by which it can be drawn intocontact with the rim at the willof the rider.

It also comprises details of constructionwhich will be more fully explained by reference to the accompanying drawings, in.

this rim I use lugs 3,. which arefitted to the inner periphery of the rim or felly A, and these lugs are firmly secured to the felly by bolts, as at 4, or equivalent securing devices; The lugs extend between any two of the spokes and may be as many as six, more or less, equally spaced around the inner periphery of the felly.

The lugs 3 have a groove or channelformed in their outer periphery, as shown at 5, and the inner peripheryof the rim 2 fits into this channel, so that the outer face of the rim is approximately flush with the outer edges of the lugs, thus making a smooth finish when the parts are in place. The rim is screwed or bolted to the lugs, as shown at 6, and is in this manner firmly united to and revoluble with the wheel.

The brake-shoe 7 is adapted to press against the inner periphery of the rim 2 and has upon it lugs or fianges 8, which fitting over the inner periphery of the rim 2 on both sides serve to hold the brake-shoe in proper relation with the rim at all times. The brakeand this guide-rod is slidable through guides .11, secured to the rear fork -1 2iof the bicycleframe. A rod'or cord 13 connectsthe slidable rod 10 with a bell-crank; lever. let, here.

or other equivalent operating device, as at 17.

This device is preferably fixed uponor near the handle-bar of the machine, so that the rider hasit undereasy control, and by movement of the controlling hand-lever the power is transmitted through the various connections to draw the brake-shoe 7 against the inner periphery of the rim 2 with any desired degree of pressure. This pressure being always at right angles with the axle of the wheelwill be resisted by the journal-bearings of thewheel, and no undue strain will be brought upon any portion of the wheel.

The supplemental rim relieves the tires of all the wear which is usually brought upon them by the use of brakes acting directly upon their surface, and it also prevents the wear and disfigurement of the rim or felly of the wheel, which will occur if the shoe is caused to press upon that.

Havingthus described my invention, what I claim, and desire to secure by Letters Pats ent, isi 1. The combination ina bicycle-brake of a rim independent of. and interior to the felly of thefwheel, lugand bolt connections between the rimand felly and securing one to the other, a brake-shoe operating upwardly against the rim and engaging the latter at right angles with the axle of the machine, and means for operating'the brake-shoe.

2. The combination with a bicycle-wheel of lugs fixed at intervals within the wheelfolly and having channels upontheexterior angle, a rim fitting sai'd 'cha'n'nels and bolted thereto, having its inner periphery of smaller diameter and clear of the lugs and folly, a brake-shoe curved to fit said inner periphery having guide-lugs upon opposite sides, a

guided slidable rod c'onnected with the shoe and connections between said rod and a hand:

the slidabie rod, a hand-lever at the bicyeie head and a cord connecting it with the bellcrank lever whereby the brake-shoe may be caused to press against the interior of the annular rim and at right angles with the wheel-shaft.

In witness whereof I have hereunto set my hand.

ALBERT MAIN. \Vitnesses:

S. II. NoURsE, CHAS. E. TOWNSEND. 

